Piston-rod and piston connection.



m. www. Patented May 1,' |900.`

Wi. S. NAPIER.

PlSTON RGD AND FISTDN CGININECTIDN.l

(Application filed Jan. 8, 1900.)

(No Model.)

Fay. 1.

Nirnn STATES intranet* Fries.

PlSTON-ROD ND PISTON` CQNNLR'JTION.

SPECIFICATION forming part of Letters Patent NO. 648:77 5, dated May 1,QOU.

Application tiled. January 8,1900. Serial No. 767. 'No model.) l

l'o 11H wlw/11, 1'/ l/l'rrfl/ coltre/1m Bc it known that I, Moxtmut'uS'rANnLEY NAPIER, engineer, a subject of the Queen ot Great Brita-inresiding at Vine street York road, London, England, have invented anlmprovcd Piston-Rod and liston Connection, oi' which the following is aspecification.

This invention has reference to improved means for adjusting thewrist-pin connection between a pistoimod and piston. .so that tinpartscan be readily adjusted in order'io compensate for the wear that takespiace at the bearing. For this purpose I provide a tapered pin extendingtransversely through the piston and passingth rough actn-respondugly-ta.- pered c ve on thc end ot' the piston-rod. 'ihc saidpin is so constructed that 1t can nc iongitndinally adjusted to take upthe Wear and be iirnily locked in such adjusted position.

I will describethe invention more inlly with reference to theaccompanying drawings, in which- Figure l is alongitudinai scct'.: n,and Fig. L a transverse section on the line l l oi' Fig. 1, showing myinvention applied to the piston and piston-rod of a gas-engine.

A is the'piston, and l.; is the piston-rod. The said piston is providedwith internal lateral bosses d u', through which the pin U is adapted tobe passed' from the exterior of the piston. 'lhese bossesu and o aremade with cylindrical holes for the pin C to cuter. The eye i3' of thepiston-rod li is niadc tapering in accordance with the taper oi' the pinC. The larger end C' of the said pin is screwthreaded, as also is theinterior oi the boss ft, for the screw-1threads` on the piu to engagewith. 'ihe larger end et' the said pin is also provided with a recess cor isotheivise formed to receive a suitable tool for turning the pin toadjust it. The boss n is formed with a transverse hole or cavity for thereception ot' a movable sleeve d, which by means of a setscrew u* can`becaused to iirmly press against the said pin to tightly grip it andretain it in its adjusted position.

.W hen it is desired to take up any wear oecurring between the pin C andthe eye l'i of the piston-rod, the set-screw a" is unscrewed, thereby`releasing the pressure which the sleeve o exert-s on said pin. 'lhesaid pin can then br turned in order to canse it to advance in itsbosses the requisite distance to take up the amount oi slack existingbe-z tween it and the aforesaid eye ll'. set-screw di is then tightenedup again, so as to cause the sleeve o" to firmly press against 4 thesaid pin and maintainit in its newly-ad- 2. The combination with apiston and pis-.

,ton-red, of a tapered pin adapted to be passed transversely through thepiston and through 'a tapered eye on the piston-rod, said pin havingscrew-threads adapted to engage with corresponding screw-threads on aboss formed on the interior of the piston, said pin having The said'means for enabling the said pin to be turned l in orderto adjust itlongitudinally.and means foi-'locking it in its adjusted positionsubstantially as and for the purposespecified.

2i. The combination with the piston and pis ton-rod, of a tapered pinadapted to be passed transversely through the piston and through atapered eye on the piston-rod, the pin being provided with eyiindricaiends and the piston with internal bosses to receive said cylindricalends, said pin also provided with screw-threads at its large; end whichengage with sercw-threads formed inthe corresponding boss, said pinprovided also with means for enabling it to be longitudinally adjusted,and a movable sleeve anda set-screw ior holding or liberating said pin,substantially as specified.

In' testimony whereoil I have hereunto set my hand, in presence et twosubscribing wit'- ncsscs, this 22d day oi l 'mceinberY 15in).

